Program

P.57 -- Poster, NCTP-41

Date: Wednesday, 3 August 2016

Time: 08h30 - 10h00

Investigation of the nonsequential process of helium induced by two-color laser pulses

Huynh Van Son (1), Truong Dang Hoai Thu (2), Tran Hoang Hai Yen (3), Pham Nguyen Thanh Vinh (2)

(1) Ho Chi Minh University of Science; (2) Ho Chi Minh University of Pedagogy; (3) Sai Gon University

In this study, the nonsequential process of helium induced by two-color laser pulses consisting of 800-nm and 400-nm fields is investigated using full three-dimensional classical ensemble model. We consider situations where two components of the pulse are orthogonal and in parallel to each other. By tuning the relative phase of the laser pulses, the correlated dynamics between two ionized electrons can be strongly modified. Trajectory analysis indicates that the roots of this modification in electronic correlated dynamics are the instant of double ionization, the repulsive force between two ionized electrons, and the energy sharing dynamics between them toward the recollision process. The dependence of $He^{2+}$ yield on the relative phase of the pulses is also discussed.

Presenter: Truong Dang Hoai Thu